An electrical physical constraint substation system comprises a plurality of data reading modules, information identification modules, an information fusion module and a protection action module, wherein the plurality of data reading modules are used for acquiring voltage and current information of a transformer protection module including each end of a transformer, each data reading module is arranged at an input-output end of each stage of transformer, output ends of the data reading modules are electrically connected with the information identification modules, the numbers of the information identification modules are equal to the numbers of the data reading module, input ends of the information identification modules are electrically connected with the output ends of the data reading modules, output ends of the information identification modules are electrically connected with the information fusion module, the information fusion module is used for performing information fusion according to an information error condition and each protection action condition, is electrically connected with the information identification module and is electrically connected with the protection action module, and the protection action module is used for judging a fault position and sending a trip signal to a corresponding circuit breaker and is electrically connected with the information fusion module. By the electrical physical constraint substation system, the protection reliability of an intelligent substation is improved, the concentrated protection performance under conditions of information shortage or errors is improved, and a new method for handling information shortage error condition of the intelligent substation in a concentrated protection way.